package lab02.Test36;

/**
 * Created by Administrator on 2017/11/9.
 */
public class Undergraduate extends Student{
@Override
    String calGrade(){
    double avg=calAverage();
    if (avg>=80&&avg<100)
        grade="优秀";
    else if(avg>=70&&avg<80)
    grade="良好";
    else if(avg>=60&&avg<70)
    grade="一般";
     else if(avg>=50&&avg<60)
    grade="及格";
    else
    grade="不及格";
    return grade;
}
}
